From 2626962dd3351fb33c7728a462b02d8e39d4502d Mon Sep 17 00:00:00 2001
From: Albrecht Schlosser <albrechts.fltk@online.de>
Date: Wed, 1 Mar 2023 17:24:03 +0100
Subject: [PATCH] Fix regression: failed to build shared FLTK libs

Add FL_EXPORT to some classes to make building shared libs possible.
Building shared libs and 'fluid-shared' missed global symbols.
---
 FL/Fl_Scheme_Choice.H   | 2 +-
 FL/Fl_Shortcut_Button.H | 2 +-
 FL/Fl_String.H          | 4 +++-
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/FL/Fl_Scheme_Choice.H b/FL/Fl_Scheme_Choice.H
index e45befcdd..336d43fb3 100644
--- a/FL/Fl_Scheme_Choice.H
+++ b/FL/Fl_Scheme_Choice.H
@@ -21,7 +21,7 @@
 #include <FL/Fl_Scheme.H>
 #include <FL/Fl_Choice.H>
 
-class Fl_Scheme_Choice : public Fl_Choice {
+class FL_EXPORT Fl_Scheme_Choice : public Fl_Choice {
 
 protected:
   static void scheme_cb_(Fl_Widget *w, void *);
diff --git a/FL/Fl_Shortcut_Button.H b/FL/Fl_Shortcut_Button.H
index f928944f5..5fef2ccb5 100644
--- a/FL/Fl_Shortcut_Button.H
+++ b/FL/Fl_Shortcut_Button.H
@@ -19,7 +19,7 @@
 
 #include <FL/Fl_Button.H>
 
-class Fl_Shortcut_Button : public Fl_Button {
+class FL_EXPORT Fl_Shortcut_Button : public Fl_Button {
 private:
   bool hot_, pre_hot_;
   Fl_Shortcut pre_esc_;
diff --git a/FL/Fl_String.H b/FL/Fl_String.H
index bb38776ad..f3ae71b1b 100644
--- a/FL/Fl_String.H
+++ b/FL/Fl_String.H
@@ -21,6 +21,8 @@
   Basic Fl_String class for FLTK.
 */
 
+#include "Fl_Export.H"
+
 // See: https://en.cppreference.com/w/cpp/string/basic_string/basic_string
 
 /**
@@ -49,7 +51,7 @@
 
   \since 1.4.0
 */
-class Fl_String {
+class FL_EXPORT Fl_String {
 
 private:
   /*